Professional tool for commercial or occasional use. Quality set made from alloy steel, not carbon steel like cheaper models Metric sizes ranging from M3M12 SET Includes; 17 x Dies with a 25mm diameter M3 x 0.5 / M3 x 0.6 / M4 x 0.7 / M4 x 0.75 / M5 x 0.8 / M5 x 0.9 / M6 x 0.75 / M6 x 1.0 / M7 x 0.75 / M7 x 1.0 / M8 x 1.0 / M8 x 1.25 / M10 x 1.25 / M10 x 1.5 / M12 x 1.5 / M12 x 1.75 / 1/8 NPT27 17 x Taps M3 x 0.5 / M3 x 0.6 / M4 x 0.7 / M4 x 0.75 / M5 x 0.8 / M5 x 0.9 / M6 x 0.75 / M6 x 1.0 / M7 x 0.75 / M7 x 1.0 / M8 x 1.0 / M8 x 1.25 / M10 x 1.25 / M10 x 1.5 / M12 x 1.5 / M12 x 1.75 / 1/8 NPT27 1 x Die holder total length 200mm 1 x Tap holder total length 190mm 1 x T-bar type tap holder 1 x Screwdriver 1 x Metric thread gauge Comes in a metal tin for easy storage and transportation as well as easy finding. PLEASE NOTE. Dies are no longer split dies as pictured but are standard ones.